National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Overcast

51°F

11°C

Humidity 89%
Wind Speed NE 14 G 23 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 17 Apr 3:56 pm EDT
Extended Forecast for

South Dennis MA

  • This Afternoon

    This Afternoon: A slight chance of rain. Mostly cloudy, with a high near 59. Northeast wind around 8 mph. Chance of precipitation is 20%.

    High: 59 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 43. North wind 3 to 6 mph.

    Low: 43 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 4pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 50. Northeast wind 7 to 9 mph.

    High: 50 °F

    Patchy Fog

  • Saturday Night

    Saturday Night: Showers likely, mainly after 4am. Patchy fog. Otherwise, cloudy, with a low around 42. Calm wind. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Rain likely before 4pm, then rain and snow likely. Some thunder is also possible. Patchy fog before 9am, then patchy fog after 2pm. Otherwise, cloudy, with a high near 56. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 56 °F

    Rain/Snow
    Likely and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain and snow likely before 8pm, then a chance of rain between 8pm and 2am. Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 38. Northwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 38 °F

    Rain/Snow
    Likely and
    Patchy Fog
    then Chance
    Rain

  • Monday

    Monday: Mostly sunny, with a high near 45. Northwest wind around 7 mph becoming northeast in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36. Light and variable wind becoming north around 6 mph in the evening.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 48. North wind around 7 mph.

    High: 48 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of rain. Mostly cloudy, with a high near 59. Northeast wind around 8 mph. Chance of precipitation is 20%.
Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 43. North wind 3 to 6 mph.
Saturday
Patchy fog before 4pm, then patchy fog after 5pm. Otherwise, cloudy, with a high near 50. Northeast wind 7 to 9 mph.
Saturday Night
Showers likely, mainly after 4am. Patchy fog. Otherwise, cloudy, with a low around 42. Calm wind. Chance of precipitation is 60%.
Sunday
Rain likely before 4pm, then rain and snow likely. Some thunder is also possible. Patchy fog before 9am, then patchy fog after 2pm. Otherwise, cloudy, with a high near 56. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
Rain and snow likely before 8pm, then a chance of rain between 8pm and 2am. Patchy fog before 8pm. Otherwise, mostly cloudy, with a low around 38. Northwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday
Mostly sunny, with a high near 45. Northwest wind around 7 mph becoming northeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 36. Light and variable wind becoming north around 6 mph in the evening.
Tuesday
Sunny, with a high near 48. North wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 39. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 54. Southwest wind 8 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 41. Southwest wind around 5 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 53. North wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 42. West wind around 5 mph.
Friday
Partly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
4:00 pm EDT Apr 17, 2026
Forecast Valid:
4pm EDT Apr 17, 2026-6pm EDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation